diff options
| author | Ben Laurie <ben@openssl.org> | 2000-07-01 16:30:27 +0000 |
|---|---|---|
| committer | Ben Laurie <ben@openssl.org> | 2000-07-01 16:30:27 +0000 |
| commit | 69b5d3c51fa30072895a60d8a6aca0fcb231442b (patch) | |
| tree | 3980b2d5ebfac79208a44da0379c0dc97112022b /crypto/bn/bn_mont.c | |
| parent | 2bfb4dbce445eaa4dc06d3012a41eeb78628a06f (diff) | |
Don't let top go below zero!
Diffstat (limited to 'crypto/bn/bn_mont.c')
| -rw-r--r-- | crypto/bn/bn_mont.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/bn/bn_mont.c b/crypto/bn/bn_mont.c index e5fbcd619f..6a54e8f4cf 100644 --- a/crypto/bn/bn_mont.c +++ b/crypto/bn/bn_mont.c @@ -90,7 +90,7 @@ int BN_mod_mul_montgomery(BIGNUM *r, BIGNUM *a, BIGNUM *b, bn_wexpand(tmp2,a->top*4); bn_sqr_recursive(tmp->d,a->d,a->top,tmp2->d); tmp->top=a->top*2; - if (tmp->d[tmp->top-1] == 0) + if (tmp->top > 0 && tmp->d[tmp->top-1] == 0) tmp->top--; #else if (!BN_sqr(tmp,a,ctx)) goto err; |